EP 2778419 B1 20200527 - SYSTEMS AND METHODS FOR FLUID PUMP OUTLET PRESSURE REGULATION
Title (en)
SYSTEMS AND METHODS FOR FLUID PUMP OUTLET PRESSURE REGULATION
Title (de)
SYSTEME UND VERFAHREN ZUR REGULIERUNG DES AUSGANGSDRUCKS EINER FLÜSSIGKEITSPUMPE
Title (fr)
SYSTÈMES ET PROCÉDÉS DE RÉGULATION DE PRESSION À LA SORTIE D'UNE POMPE À FLUIDE
Publication
Application
Priority
US 201313803152 A 20130314
Abstract (en)
[origin: EP2778419A1] Fluid pump pressure regulation systems and methods have a valve body (94) with a bore (48) and a valve spool (70). The valve spool (70) connects a first (50) and second port (54) to a third port (56) in different valve spool positions. The first port (50) is in fluid communication with an output of a fluid pump (26) to receive a first fluid pressure from the fluid pump (26). The second port (54) is in fluid communication with a fluid reservoir (22). The third port (54) is in fluid communication with a fluid pump (26) input to provide a second fluid pressure to the fluid pump (26) to control the first fluid pressure from the fluid pump (26). A linear actuator (46) is adjacent the valve body (96), with a first spring (90) and a second spring (126) biasing the valve spool in a first or second direction.
IPC 8 full level
F01M 1/02 (2006.01); F01M 1/16 (2006.01); F16K 17/00 (2006.01); F16K 51/00 (2006.01); G05D 16/20 (2006.01)
CPC (source: EP US)
F01M 1/16 (2013.01 - EP US); F04B 49/002 (2013.01 - US); F04B 49/06 (2013.01 - US); F04B 49/22 (2013.01 - US); F04C 14/18 (2013.01 - US); F04C 14/22 (2013.01 - US); F16K 11/04 (2013.01 - US); F16K 11/07 (2013.01 - US); F16K 17/00 (2013.01 - EP US); F16K 51/00 (2013.01 - EP US); G05D 16/20 (2013.01 - US); G05D 16/2024 (2018.12 - EP US); G05D 16/204 (2013.01 - US); F01M 2001/0238 (2013.01 - EP US); F01M 2001/0246 (2013.01 - EP US); Y10T 137/0379 (2015.04 - EP US); Y10T 137/86879 (2015.04 - EP US)
Citation (examination)
- US 5800130 A 19980901 - BLASS JAMES R [US], et al
- US 2009057583 A1 20090305 - VAN WEELDEN CURTIS LEE [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2778419 A1 20140917; EP 2778419 B1 20200527; CN 104047664 A 20140917; CN 104047664 B 20180504; CN 108487964 A 20180904; JP 2014178028 A 20140925; JP 2019138476 A 20190822; JP 6537776 B2 20190703; US 2014261716 A1 20140918; US 2017167329 A1 20170615; US 9582008 B2 20170228
DOCDB simple family (application)
EP 14275035 A 20140228; CN 201410092623 A 20140313; CN 201810305858 A 20140313; JP 2014047015 A 20140311; JP 2019104117 A 20190604; US 201313803152 A 20130314; US 201715443398 A 20170227